Infusion set

An infusion set for intermittent administration of a therapeutic substance through the skin of a patient, comprising:

• an infusion part comprising a base part having a main plane, a head part extending from the main plane of the base part and a cannula extending from the base part into the skin of a patient,
• first fastening means for fastening the infusion part to the skin of a patient,
• a connector having a plane parallel to and above the main plane of the base part, and having one or more arms, said arms being fastened to the connector at a first end, and being free in a second opposite end, and a tube positioned in the second end for connecting the infusion set to a medical device,
• a guide means for positioning the infusion part and the connector in relation to each other,
• second fastening means for fastening the connector to the infusion part, said second fastening means comprising projecting connector retention devices positioned on the arms of the connector adapted to engage with retention devices extending from the base part,
• wherein said retention devices of the second fastening means being positioned in a second end of the base part and corresponding to the connector retention device positioned at the free end of the one or more arms of the connector, when the connector is positioned via the guide means relative to the infusion part, and wherein the connector further comprises a protruding protecting part for protection of the free second end of the one or more arms.